29) Find the Diagonal of the cuboid whose length are l = 10 cm, b = 8 cm and h= 6 cm?

Transcription

1 Class :IX Time:11 am to 1 p.m. Mathematics 1) If a m-n x a 2n = a k ; then value of k is. a) m + 2n b) 1 c) m + n d) mn 2) If a = x +, then x3 +x -3 =.. a) a 3 +3a b)a 3-3a c) a 3 + 2a d) a 3-3 3) x = a) b) c) d) 4) If 2 x -2 x-1 =4; then x=.. a) 1 b) 2 c) 3 d) 0 5) If a x = b y and a = b 2 then relation between x and y is a) x = 2y b) y = 2x c) y = x d) x = 2y 6) If x -3 = - 64; then x =? a) - b) c) 4 d) 4 7) If 8 x = 512 then 2 x 4 x =.? a) 32 b) 64 c) 512 d) none of these 8) If a x = b; b y = c; c z = a then xyz = a) 1 b) abc c) a + b + c d) ab + bc + ca 9) If x is the mean proportional of a and c then x =? a) b) c) ac d) 10) If two angles of a triangle are equal to the two angles of another triangles respectively they are.. a) Similar b) Congruent c) have the same area d) have the same corresponding altitudes 11) The angle subtended by a major arc at the centre is.. a) > 180 o b) < 180 o c) 180 o d) 90 o 12) Angle in a major segment is.? a) An obtuse angle b) an acute angle c) a right angle d) none of these 13) If a rhombus is cyclic then it is a..? a) Parallelogram b) trapezium c) square d) rectangle 14) ABCD is a rhombus. Then AB 2 + BC 2 + CD 2 +AD 2 = a) AD 2 + CD 2 b) AC 2 BD 2 c) AC 2 + CD 2 d) AC 2 + BD 2 15) A cirsumscribed parallelogram is a.? a) Square b) Rectangle c) Triangle d) Rhombus

2 16) Number of common tangents that can be drawn to two intersecting circles is.? a) 2 b) 4 c) 3 d) 1 17) In an equilateral triangle the ratio of the side to the height is. a) 3 : 2 b) 2 : 3 c) 1 : 2 d) 2 : 1 18) In a square the ratio of the length of a side and a diagonal is ? a) 2 : 1 b) 1 : 3 c) 1 : 2 d) 1 : 1 19) If two circles touch internally then the number of their common tangents is.. a) 4 b) 3 c) 2 d) 1 20) Diagonal of a square is 12 cm, its area is sq cm. a) 49 b) 36 c) 72 d) 62 21) Name the Indian Scientist who gave the proof of Pythagoras theorem.? a) Bhaskaracharya b) Ramanujan c) A.P.J Abdul Kalam d) Mendal 22) The area of right angle triangle is 48 sq cms. If the length of one of the perpendicular sides is 12cms. Find the length of the side..? a) 10 cm b) 6 cm c) 8 cm d) 7.5 cm 23) The area of an Isoscales right angled triangle is 32 sq.cms. Find the length of the side.? a) 6 cm, 7 cm, 2 3 cm b) 8cm, 8 cm, 8 2 cm c) 6cm, 6 cm, 6 2 cm d) None of these 24) If the sides of triangle are 5, 6 and 7 cms repectively, find the area of triangle? a) 6 cm 2 b) 6 3 cm 2 c) 2 5 cm 2 d) 6 6 cm 2 25) The base and the other side of an isoscales triangle are 10 cm and 13 cm respectively. Find its area..? a) 45 cm 2 b) 30 cm 2 c) 60 cm 2 d) 35 cm 2 26) The perimeter of an isosceles triangle is 64 cm. if the length of the equal side 12 cm, find the length of the base.? a)36 cm b)48cm c)40cm d)56cm 27) If the length of side of and equilateral triangle is 16 cm. Find the area and height of the triangle? a) 216 sq.cm b) c) 64 cm 2 d) None of these 28) Find the volume of cuboid whose length, breath and height are 3 cm, 4 cm, and 5 cm respectively.? a) 30 cm 3 b) 45 cm 3 c) 60 cm 3 d) 72 cm 3 29) Find the Diagonal of the cuboid whose length are l = 10 cm, b = 8 cm and h= 6 cm? a) 12 cm 3 b) 141 cm 3 c) 126 cm 3 d) 21 cm 3 30) Find the largest rod that can be placed in a room of 8 cm, 6 cm, and 12 cm. a) 12 cm b) 8 cm c) cm d) None of these 31) Find the volume of cube whose edge is 5 mt?

3 a) 25 m 2 b) 121 m 2 c) 125 m 3 d) 12.5 m 3 32) Find the diagonal of cube whose edge is 6 cm? a) 216 m 2 b) 6 6 m 2 c) 8 3 m 2 d) 6 3 m 2 33) In a football match, Ronaldo makes 4 goals from 10 penalty kicks. Find the probability of converting a penalty kick into a goal by Ronaldo. b) c) d) 34) From the month of August, whose first day is Tuesday, a day is selected. Find the probability that the day selected is not a Tuesday. b) c) d) 35) Find the probability that a non leap year contains exactly 53 Mondays. b) c) d) none of these 36) A day is selected from April, whose first day is Monday. Find the probability that the day selected is a Monday. b) c) d) 37) In a cricket match, Shane Warne takes three wickets from every 27 balls he bowls. Find the probability of a batsman not getting out by Shane Warne s bowling. b) c) d) 38) How many pair of x and y satisfy the equations 2x + 4y = 8 and 6x + 12y = 24? a) 0 b) 1 c) Infinite d) None of these 39) The product of a number and 72 exceeds the product of the number and 27 by 360. Find the number. a) 12 b) 7 c) 8 d) 11 40) The total cost of 10 erasers and 5 sharpeners is at least Rs 65. The cost of each eraser cannot exceed Rs 4. Find the Minimum possible cost of each sharpener. a) Rs 6 b) Rs 5.50 c) Rs 5 d) 11 41) In a group of goats and hens, the total number of legs is 12 more than twice the total number of heads. The number of goats is

4 a) 8 b) 6 c) 2 d) cannot be determined 42) Jeevesh had 92 currency notes in all, some of which were of Rs. 100 denomination and the remaining of Rs 50 denomination. The total amount of all these currency notes was Rs How much amount in rupees did he have in the denomination of Rs 50? a) 3500 b) 3350 c) 2850 d) ) Amar and Bhavan have a certain amount with them. If Bhavan give Rs. 20 to Amar, he will have half the amount with Amar. If Amar give Rs 40 to Bhavan, he will have half the amount with Bhavan. Find the amount with Bhavan. a) 70 b) 90 c) 60 d) 80 44) If the slope and the y-intercept of a line are the roots of the equation x 2 7x 18 = 0, then the equation of the line can be a) 2x + y 9 = 0 b) 2x y + 9 = 0 c) 9x y +2 = 0 d) 9x + 2y - 2 = 0 45) The points on the Y- axis which are at a distance of 5 units from (4, -1) are a) (0, -2), (0, 4) b) (0, 2), (0, -4) c) (0, 2), (0, 4) d) (0, -2), (0, -4) 46) The equation of the line making equal intercepts and passing through the point (-1, 4) is a) x- y =3 b) x + y + 3= 0 c) x + y = 3 d) x y + 3 = 0 47) The equation of a line passing through P (3, 4) such that P bisects the part of its intercepted between the coordinate axes is..? a) 3x + 4y = 25 b) 4x + 3y = 24 c) x + y = 7 d) x y = -1 48) In a triangle, the sum of any two sides exceeds the third side by 6 cm. Find its area (in sq cm). a) 12 3 b) 9 3 c) 15 3 d) ) The length of diagonals of a rhombus is 9 cm and 12 cm. Find the distance between any two parallel side of the rhombus. a) 7.2 cm b) 8 cm c) 7.5 cm d) 6.9 cm 50) Form each corner of a square sheet of side 8 cm; a square of side y cm is cut. The remaining sheet is folded in to a cuboid. The minimum possible volume of a cuboid formed is M cubic cm. if y is an integer, then find M. a) 32 b) 18 c) 36 d) 12 Science: 51) The frequency of a simple pendulum with amplitude..

5 a) Increase b) Decreases c) Remains unchanged d) None of these. 52) The frequency of a turning fork when it will hit harder a) Increase b) Decreases c) Remains Same d) None of these. 53) If a small quantity of wax is added to one of the prongs, of tuning fork the frequency is. a) Increase lightly b) Decreases lightly c) Remains same d) None of these. 54) The frequency of a simple pendulum when its length is increased.. a) Increase b) Decreases c) Does not change d) None of these. 55) When a body is set into vibration and then left to itself, the vibrations are called a) Free vibrations b) forced vibrations c) damped vibrations d) resonance. 56) The periodic vibrations of decreasing amplitude are a) Natural Vibrations b) forced vibrations c) damped vibrations d) resonance. 57) If we strike a tuning fork and then press its stem against the top of a table, the sound becomes louder because. a) Forced vibrations of the table b) natural vibrations of the table c) natural vibrations of the tuning fork d) None of these 58) When a body executes vibrations under the action of an external periodic force, then the vibrations of the body are called a) Natural Vibrations b) forced vibrations c) damped vibrations d) resonance. 59) Sound waves belong to..? a) Electromagnetic waves b) Electric waves c) Radio waves d) Mechanical. 60) The phenomenon in which if one of the two bodies of the same natural frequency is set into vibrations, the other body also vibrates under the influence of the first body is. a) Natural Vibrations b) forced vibrations c) damped vibrations d) resonance. 61) If two persons speak on the moon they a) Can listen slower than on the earth b) can listen as it is on the earth c) Can listen quicker than on the earth d) they can t listen 62) The frequency of a tuning fork when its prongs are filled a) Increase b) Decreases c) Remains same d) first increased then decreased

6 63) The amplitude of forced vibration a) Remains same b) Increase c) Decreases d) either increased or decreased 64) When a vibrating tuning fork is brought to a tuning fork at rest then it also vibrates; this is due to a) Reflection b) repulsion c) attraction d)resonsance 65) The wave s originating in a source and travelling forward in a medium is called a) Progressive waves b) stationary waves c) electromagnetic waves d) electric weaves 66) Helio centric theory was proposed by a) Ptolemy b) Copernicus c) Newton d) Kepler 67) Geo- centric theory was proposed by; a) Ptolemy b) Brahe c) Kepler d) Copernicus 68) The scientist who supported heliocentric theory a) Ptolemy b) Newton c) Tycho Brahe d) Copernicus 69) The planet revolve round the sun in ellipitical orbits was proposed by a) Ptolemy b) Kepler c) Tycho Brahe d) Copernicus 70) Copernican theory was developed by Kepler and introduced that planets revolve round the sun in orbits a) Circular b) Ellipitical c) Conical d) None 71).. Data on planetary motion was analyzed and introduced Kepler s law of motion a) Ptolemy b) Copernicus c) Tycho Brahe d) Newton 72) What happens when Pith ball and a stone were droped simultaneously from the same height? a) Pith ball reaches the ground first b) stone reaches the ground first c) Pith ball does not reach the ground d) both reach the ground at a time 73) Who made an experiment from the leaning tower of Pisa that a feather and a metal coin dropped simultaneously from the same height would reach the ground at the same time? a) Newton b) Galileo c) Kepler d) Ptolemy 74) According to this law the velocity of the planet increases when it reaches close to the sun a) Kepler s orbital law b) Kepler s law of areas c) Kepler s law of period of revolution d) None

7 75) The gravitational force between two objects of 10 kg and 2 kg separated by a distance of 1m is a)1.334 x N b) x 10-9 N c)1.334 x N d) x N 76) If the distance between two objects is halved, then the gravitational force between them is.. a) Doubled b) Halved c) 4 times increases d)4 times decreases 77) If the distance between two objects is doubled then the gravitational force between them is a) Doubled b) Halved c) 4 times increases d)decreases to h 78) What is the gravitational force on stone of mass 10 kg? a) 98N b) 9.8N c) 0.98N d) 0.098N 79) The moon makes one revolution about the earth in: a) 1 year b) 1 month c) 2 hrs d) 27.3 days 80) The distance of the moon from the earth is about a) 6400km b) 3.85 x 10 5 km c) 6.67 x km d) 3.85 x 10 5 m 81) The moon is directed towards the earth with acceleration: a)1.67 ms -2 b) 9.8 ms -2 c) 27.4 ms -2 d) ms -2 82) The weight of a body is measured by using the: a) Archimedes principle b) Laws of flotation c) Hooke s law d) Universal gravitational law 83) Spring balance works on the: a) Archimedes principle b) Laws of flotation c) Hooke s law d) Universal gravitational law 84) Variation of g value is due to: a) Altitude b) depth c) local condition d) All 85) Which of the following principle is not true? a) Ptolemy b) Cope c) Kepler d) Newton s universal law of attraction 86) According to Kepler the revolution of the planet around the sun in one time; a) Is same for all planet b) depends on the size of the planet c) depends on the distance between sun and the planet d) depends on the speed about its own axis 87) The universal law of gravitation

8 a) Depends on the size of the plant b) depends on the distance between the sun and the planet c) Depends on the speed about its own axis d) is applicable in the universe 88) The weight of 400 gram stone is a) 0.041N b) 0.4N c) 3.9N d) 3920N 89) According to Kepler the speed of the planet when it is close to the sun is. a) Maximum b) Minimum c) Zero d) Same 90) The origin of the universal law of gravitation is a) Kepler s Law b) Newton s Law c) Hooke s law d) None 91) The distance between the sun and the planet is 4 times that the distance between sun and the earth. What is the revolution of the planet about the sun? (The revolution of the earth about the sun is 1 year) a) 2 years b) 4 years c) 8 years d) 16 years 92) Artificial satellite Apple is 3600 km away from the equator and rotates in circular path. What is the no. of rotations made by it in seven days? a) 1 b) 7 c) 49 d) 14 93) At what height above the earth s surface a person s weight will be 20 kg? The actual weight of the person is 80 kg. (Radius of the earth is R = 6400 km) a) 6400km b) 3200 km c) 12,800 km d) 3600km 94) At what depth below the earth s surface a person s weight will be half of his actual weight on the surface of the earth (Radius of the earth R= 6400 km) a) 6400km b) 3200 km c) 12,800 km d) 3600km 95) What will be the gravitational force on the surface of the planet whose mass and radius are double to that of the earth? a) 9.8m/sec 2 b) 19.6m/sec 2 c) 1.45m/sec 2 d) 4.9m/sec 2 96) The acceleration due to gravity on a planet whose mass and radius are half that of the earth a) 9.8m/sec 2 b)4.9 m/sec 2 c)19.6 m/sec 2 d)2.45 m/sec 2 97) Weight of an object at poles a) Not changes b) increases c) decreases d) becomes zero

9 98) At present the following theory is no more accepted: a) Ptolemy theory b) Copernicus theory c) Kepler s law of motion of planets d) Newton s universal gravitational law 99) A particle of mass 100g moves at a speed of 1m/sec. Its kinetic energy is a) 50J b) 5J c) 0.5J d) 0.05J 100) A ball is thrown upward from a point A. It reaches up to the highest point B and returns. a) Kinetic energy at A = Kinetic energy at B b) Potential energy at A = potential energy at B c) Potential energy at B = Kinetic energy at B d) Potential energy at B = Kinetic energy at A